Construction machine
First Claim
1. A construction machine, comprising:
- an engine room;
an engine disposed in the engine room;
a heat exchanger disposed in the engine room;
an air intake passage configured to provide a communication between an interior and an exterior of the engine room; and
a cooling fan disposed in the engine room, the cooling fan being configured to draw an external air into the engine room through the air intake passage by rotation of the cooling fan, and to flow the external air in such a manner that the external air passes through the heat exchanger, whereinthe heat exchanger has an air intake surface formed on a side portion of the heat exchanger, the air intake surface being a surface configured to receive an airflow to be drawn into the heat exchanger, andthe air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a first position just above the heat exchanger and bending downward at a second position downstream of the first position, to reach the air intake surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A construction machine includes an engine disposed in an engine room, a heat exchanger disposed in the engine room, an air intake passage configured to provide a communication between the interior and the exterior of the engine room, and a cooling fan disposed in the engine room. The cooling fan is configured to draw external air into the engine room through the air intake passage by rotation thereof, and to flow the external air for allowing the external air to pass the heat exchanger. The heat exchanger has an air intake surface formed on a side portion thereof. The air intake surface is a surface configured to receive airflow to be drawn into the heat exchanger. The air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a position over the heat exchanger and reaching the air intake surface.
6 Citations
13 Claims
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1. A construction machine, comprising:
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an engine room; an engine disposed in the engine room; a heat exchanger disposed in the engine room; an air intake passage configured to provide a communication between an interior and an exterior of the engine room; and a cooling fan disposed in the engine room, the cooling fan being configured to draw an external air into the engine room through the air intake passage by rotation of the cooling fan, and to flow the external air in such a manner that the external air passes through the heat exchanger, wherein the heat exchanger has an air intake surface formed on a side portion of the heat exchanger, the air intake surface being a surface configured to receive an airflow to be drawn into the heat exchanger, and the air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a first position just above the heat exchanger and bending downward at a second position downstream of the first position, to reach the air intake surface. - View Dependent Claims (2, 3)
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4. A construction machine, comprising:
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an engine room; an engine disposed in the engine room; a heat exchanger disposed in the engine room; an air intake passage configured to provide a communication between an interior and an exterior of the engine room; a cooling fan disposed in the engine room, the cooling fan being configured to draw an external air into the engine room through the air intake passage by rotation of the cooling fan, and to flow the external air in such a manner that the external air passes through the heat exchanger, wherein the heat exchanger has an air intake surface formed on a side portion of the heat exchanger, the air intake surface being a surface configured to receive an airflow to be drawn into the heat exchanger, and the air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a position over the heat exchanger and reaching the air intake surface; an air intake duct having an inner space for forming an upper passage portion of the air intake passage, the upper passage portion being configured to extend from the exterior of the engine room to the interior of the engine room, and to pass the position over the heat exchanger; and an equipment space disposed forward of the engine room and on one of sides of the construction machine in a transverse direction thereof orthogonal to a longitudinal direction thereof, the equipment space being configured to house pieces of equipment including a working oil tank, wherein the air intake duct has a main air inlet port in a first end thereof, and an air discharge port in a second end thereof, the second end being opposite to the first end, the main air inlet port is disposed outside the engine room, the air discharge port is opened toward a space to which the air intake surface of the heat exchanger faces in the engine room, the main air inlet port is opened toward a front side of the construction machine, and the air intake duct extends in the longitudinal direction of the construction machine, while passing through an upper portion of the equipment space. - View Dependent Claims (5, 6, 7, 8, 9, 10, 12, 13)
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11. A construction machine, comprising:
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an engine room; an engine disposed in the engine room; a heat exchanger disposed in the engine room; an air intake passage configured to provide a communication between an interior and an exterior of the engine room; a cooling fan disposed in the engine room, the cooling fan being configured to draw an external air into the engine room through the air intake passage by rotation of the cooling fan, and to flow the external air in such a manner that the external air passes through the heat exchanger, wherein the heat exchanger has an air intake surface formed on a side portion of the heat exchanger, the air intake surface being a surface configured to receive an airflow to be drawn into the heat exchanger, and the air intake passage is configured to flow the external air drawn to the air intake passage alone a route passing a position over the heat exchanger and reaching the air intake surface; and an air intake duct having an inner space for forming an upper passage portion of the air intake passage, the upper passage portion being configured to extend from the exterior of the engine room to the interior of the engine room, and to pass the position over the heat exchanger, wherein the air intake duct has a main air inlet port in a first end thereof, and an air discharge port in a second end thereof, the second end being opposite to the first end, the main air inlet port is disposed outside the engine room, and the air discharge port is opened toward a space to which the air intake surface of the heat exchanger faces in the engine room, wherein the engine, the heat exchanger, and the cooling fan are disposed side by side in the engine room in a transverse direction of the construction machine orthogonal to a longitudinal direction of the construction machine, the heat exchanger being disposed at a rightmost position or at a leftmost position among the engine, the heat exchanger, and the cooling fan, the main air inlet port is disposed on a side opposite to the side where the heat exchanger is disposed in the transverse direction, and opened toward the exterior of the engine room, and the air intake duct extends in the transverse direction, while passing through an upper portion of the engine room.
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Specification